So from our bedroom window we saw a bright flashing light. We first thought it was a helicopter. It was making a strange sound like a subwoofer. We looked out the window and saw an object flying at an eerie pace. Unlike anything we had ever seen. It had many different flashing lights. Again we thought it was a helicopter but it had no propellars. Also helicopters don't move like this. After A minute or so it disappeared behind a few trees. After this we ventured to the roof top where we saw 3 of the same craft in the distance. They looked like airplanes but did not move like airplanes. They also hovered for extended periods of time and were going back and forth and up and down over the Mississauga area of toronto. They also became blindingly bright when they seemed to be turning. They are still flying around but it became too cold and we came inside. From our bed we heard the noise again and went to the window to see the same craft travelling east before falling out of sight.